Filament winding apparatus



1965 D. J. LAMB ETAL 3,1 7,

FILAMENT WINDING APPARATUS Filed June 3, 1963 2 Sheets-Sheet 1 |6 2O 34 33 39 2 r5 IO 3O 29 l3 iii: n)" 22\ Fl 6. 2. I 6%??? M E. K. MCINTOSH ,d/uzwb m. TM?

ATTORNEY Jan, 26, 1965 D. J. LAMB ETAL 3,167,263

FILAMENT WINDING APPARATUS Filed June 5, 1963 2 Sheets-Sheet 2 INVENTORS D.J. LAMB BY E.K. MCINTOSH ATTORNEY Ara-m.

United States Patent Office 3,167,263 Patented Jan. 26, 1965 corporation of Delaware Filed June 3, 1963, Ser. No. 284,865 11 Claims. (Cl. 24246.21)

This invention relates to filament yarn winding apparatus and more particularly to a bobbin chuck assemblage adapted for forming heavy and large packages of yarn at high winding speeds in textile applications.

A recognized difficulty in textile yarn winding, especially in winding large and heavy yarn packages at high speeds, is the problem of positively locking bobbins, cops, tubular members and the like upon which filament and yarn packages are formed on mandrels and shafts so as to maintain positive fixation and concentricity of the to tating members. According to conventional construction a bobbin is clutched by expanding a cluthing member, such as a resilient O-ring, against the wall of the bore of a bobbin. Under high speed and heavy load operation the expansible rings lose their grip on the bobbin and present concentricity, balance, and slippage difficulties.

It is an object of this invention to provide filament yarn winding apparatus particularly adapted for forming large and heavy yarn packages at high winding speeds.

Another object is to provide a bobbin chuck assemblage adapted to rotatably carry a bobbin in a concentrically fixed and positive scissor locked position by constant force applying bias means.

Another object of the invention is to provide a bobbin chu'ck with scissoring means for positively looking a bob bin thereon.

The bobbin chuck assemblage embodying the invention in brief comprises a hollow yarn holder means having ribs arranged on the wall defining the bore and a chuck device for rotatably carrying the yarn holder means. One arrangement of the chuck device comprises spaced cam members rotatably mounted about a fixed shaft and provided with a plurality of peripheral spaced cam surfaces. The cam surfaces cooperate to apply a scissor grip on the ribs of the yarn holder normally mounted coaxially thereabout when the cam members are counterrotatably biased by spring biasing means connecting the cam members. The cam members are locked in an unscissored p-osltion by brake and bracket means to permit ready mounting and removal of the yarn holder means from the chuck device.

The description of a preferred embodiment of the invention which follows and the accompanying drawing pro- .vide a better understanding of the invention.

In the drawing: FIGURE 1 is a cross-section view taken through 11 I of FIGURE 2 showing the chuck assemblage comprising the invention in an unscissored position for mounting a bobbin thereon;

. FIGURE 2 is an elevation view of the chuck assemblage shown in FIGURE 1 as viewed from the right side thereof and with operative apparatus associated therewith;

FIGURE 3 is an elevation view similar to that shown in FIGURE 2 illustrating the chuck assemblage of the invention in a scissored position positively gripping a bobbin;

embodying the invention, FIGURES 2 and 3, is shown in association with a reciprocating traverse guide 2 for traversingly guiding a yarn 3 thereto and a powered drive roll 4 for driving the assemblage 1.

Assemblage 11., as shown in FIGS. 1-3, comprises a chuck device 5 and a hollow bobbin 6 having spaced internal longitudinal ribs Tarranged on the wall of inner bore thereof. Chuck device 5 has a pair of counterrotating oppositely arranged spaced plates 8 and 9 mounted on a shaft 10 that is fixedly secured at one end thereof between the ends of a pivotal swing arm 11. At its free end shaft it) has a counterbore 12 which is threaded at its inner end thereof. A pair of bearings 13 and 14 are mounted in spaced relation intermediate the ends of shaft 19 and are retained on the latter by conventional snap rings.

Plate 8 is annular, preferably substantially circular, and is dished out at one side thereof providing a brake drum 15, while at its opposite side plate 8 has an axially extending hub or sleeve 16. Plate 8 is axially and rotatably mounted on bearings 13 and 14 and positioned with the brake drum 15 side thereof nearest swing arm 11 (FIG. 11). Suitable retaining rings retain plate 8 on bearings 13 and 14. Plate 8 is provided with, preferably, three spaced camming surfaces 17 about its outer periphery which surfaces 17 may be formed by cutting away cord segment therefrom. Preferably, the camming surfaces 17 are equi-spaced, symmetrical and linear and the portions between the carnming surfaces 17 are arcuate. The arcuate portions are provided with flanges 18 along their edges nearest swing arm 11 for positioning bobbin 6 thereon.

An annular stud plate 19 is coaxially mounted intermediate the ends of sleeve 16 of plate 8 and is securely positioned thereon by a set-screw 20. A plurality of stud bolts 21 are arranged in a circle about plate 19 .and project in the direction of plate 9. A bushing 22 is mounted on the free end of sleeve 16 and plate 9 is rotatably journ-aled on bushing 22 adjacent a collar portion 23 formed at one side thereof. Bushing 22 is retained by a conventional snap ring provided in a groove formed at the outer end of sleeve 16. Plate 9 is, preferably, circular and is provided with a plurality of spaced peripheral carnming surfaces 24 similar to those provided on plate 3. The arcuate portion between surfaces 24 are not flanged, however, as are those on plate 8. Collar 23 of plate 9 has a plurality of spaced slots 25 of predetermined size formed through the wall thereof and stop pins 26 extend through slots 25, through holes provided in and extending through the wall of bushing 22, and thread into threaded holes provided in sleeve 15 of plate 8. Stop pins 26 limit the degree of rotation of plate 9 and retain the latter on bushing 22;

A plurality of stud bolt 27 similar to bolts 21 are arranged on plate 9 and project therefrom in the direction of plate 19. Stud bolts 21 and 27 are located on circles of substantially equal diameter and in the same plane generated about plates 19 and 9, respectively, and are positioned on their respective plates in alternate sequence so that a bolt 21 is followed by a bolt 27, etc.

Stud bolts 21 and 27 are connected by springs 28. Each spring 23 is anchored at its one end on the end of a stud bolt 21 and at its opposite end on an adjacent stud bolt 27. Normally, with a bobbin 6 removed from chuck device 5 springs 28 are retracted and the camming surfaces 17 and 24 on plates 8 and 9, respectively, are biased so as to be misaligned relative to one another, that is, they are not in the same projected plane. When plates 8 and 9 are rotated counter to each other so as to mount bobbin 6 on device 5 springs 28 are stretched and the camming surfaces 17 and 24 are moved into intersecting positions relative to each other providing a plurality of proremoval of bobbin 6 therefrom.

from drive .roll' 4 by means of swing arm 11. handle 40 vis moved to a braking positionto pivotally' -mo.ve brake shoe 39contactingly'against brake drum 15 to brake plate 8 against rotation. :Plate 9 is then rotated to align' pin, 32 with bore 37 and ,bolt' 29 is screwediinj diagrammatically in FIGURE 4. Each V-shaped trough ,jected longitudinal V-shaped channels or troughsv24as t, peripherally and parallel of theaxis of shaft 10, as shown 7 24a is defined byprojecting'plan'es fromcammin'g surfaces 17 on plate 8 toward plate 9 and projecting planes from cam ning surfaces 24 on plate 9 toward plate 8. Troughs 24a are increased or decreased in sizeby a greater or lesser degree of counter-rotation,respectively, of the plates 8 and "9 relative to each other against the force of springs 28. A bracket bolt 29 I serted in counterbore 12 and has screw-thread engagement adjacent its threaded end-with the threaded portion of counterbore 12 and alock bracket 30 is swivelly mount ed at its one'fend thereof on bolt 29. A biasing means i r 7 V 10- threaded at one end thereof is in- I such as spring 31 is arranged coarrially' aboutbolt 29 and v v is disposed in the largerbore'of counterbore 11. Spring 7 31' acts at one end thereof against a shoulder *f ormed between the threaded inner bore and the largerboreof counterbore 12 and at its opposite end against bracket 30 to bias the latter away from plate 9.

Bracket 30, opposite its swiveled ends, has a locking 32 the stem of which projectsoutwardly from brackets in' the direction of plate 9. Pin'32 isretained in a bore extending through/the wall of bracket 30 andis biased in.

the direction of plate.9 by a spring 33 that, abuts against the head of pin 32 at one. side thereof and acts against the wall of a recessed cap nut 34 threaded into bracket- Lockingbracket 39 has a plurality of spaced dowel pins extending laterally therefrom at its swivelled end thereof and a plurality of notches or grooves 36 are formed in the end of sleeve 16 of. plate 8 for positioning the' dowel pins 35 therein. Bracket 35 serves to lock plates' 8 and 9 against rotation when plate'8 is braked and plate 9 is rotated against the force of springs 28 to a point ing dowel pins 35 away from I '32 outvfronr bore 37 while brake lever is released to move brake shoe 39 away from brake drum 15. Springs 28 then are free to retract or close'so as to bias plates 8 and 9 in counter directions relative to each other causing. camrning surfaces 17 and 24' to engage with ribs 7 i of bobbin and to scissoringly lock thereagainst. With v the yarn acrossthe face 'of bobbin 6.

notches and moving pin camsurfaces 17gapplying a force inone direction against ribs 7 and cam surfaces 24 applying a force'in asubstantially'opp'osite direction ribs Tare wedged therebetween,

Springs 28 arenot fully retracted'when bobbin 6 is scissor gripped :by surfaces 17 and 24 so that springs 28 7 apply a constant force to plates Sand 9at all times. t I

,.B'obbinlchuck assemblage 1 isthen pivoted by means of swing arm 11 towarddrivetr'oll ,4 arranged in parallel axial alignment therewith to bring bobbin 6 into contact with roll 4 for'driving assemblage 1. After a short start- {up assemblage '1 is momentarily pivoted away from roll 4, and yarn 3 traveling from traverse device 2 is wrapped by an operator around bobbin 6. When bobbin 6 again 'j' surfacely contacts the drive rolls the yarn is Wound into .a' package while traverse guide 2 traversingly displaces I To doff or remove bobbin 6 from device 5, assemblage 1 is pivoted 'away'from drive roll4 and brake lever 40 V is operated so as to'b-ringbrakeshoe 39 into contactwith the drum 15 'to'stop the rotation of device 5. Bracket'30 ,isthen rotated vso thatfdowel' pins 35 are aligned with grooves 36 and plate'9 is rotated in a clockwise direction as viewed in FIGURE 2 by manually gripping slots 38 i for disengaging the cammin'g surfaces 24 from ribs 7-and to'a degree where bore'37iis aligned with pin 32. Bracket bolt 29 is then screwed inward to jrnove bracket 30 toward plate 9 to. engage pin 32 Within'bore 37 and to position dowel pins 35 within grooves 36 thus locking vdevice 5 in a position where ribs 7 are not iscissoredby cama where the. cam surfaces 17 and 24 are substantiaLly. in

alignment with each other, or if desired to a point where I the cam surfaces wprovide'tr oughs 24a larger in size than the ribs 7 provided on bobbin'6 to permit mounting or ,Plate 9 'has a recess or bore 37-that extends' therethrough and lies in a circumferential plane transcribed about plate 9 by pin 32 when bracket'3tl is swiv'eled about bolt 29 to permit pin 32 to engage within bore 37 when, bolt 29 is turncd'or screwed a required distance into the threaded end of counterbore 12 within shaft '10.:

The chuck device 5 as illustrated in its application to ming surfaces -17 and 24'." Bobbin 6 is then easily removedfromdevice 5. l

By applying a constant force from substantially "opposite directionsagainst ribs 7 'of bobbin 6 at distributed points along the length thereof while the assemblage is operating, bobbin 6 is positively locked and is held in a concentrically balanced 1 rotating devices.

I a surface drive arrangement, however, it' is also contem- A plurality of gripping slots 38 arerformedtthrou gh' the wall of plate 9 for manually rotating plate;9.

Abrake shoe 39 actuated by a brake lever 4tl-pivotally secured to the swing arm 11 is provided to brake plate 8.

In 'operation ,'initiallychuck device 5 is pivoted away Brake may be made in'the' specific embodiment of the invention -described without departing form'the spirit thereofand wardly againstithe force of spring 31'to cause pin 32 to v be inserted bore 37 and to: position dowel pins 35 within groves 36. Lockin gtbracket 30 then rigidly connects plate 9 to fixed shaft lllthus locking plates9 against the combined'rotational force of springst28. 'With 7 plate 9'locked and plate Sybraked as described, the camming surfaces IT and 24 will be substantiallyaligned as shown in FIGURE 2. Bobbin, 6 is then mounted on' chuck device 5 so that one end of bobbin6 contacts flanges 18 of plate 8 and each rib7 is positioned adjacent' a pair of aligned camming surfaces 17 and 24. With the Gaming surfaces aligned and bobbin 6 mounted on device I 5 a segmental chord-like opening is defined between the bore ofbobbin6and surfaces 17 :and'24 withribs 7 being disposed within'the chord-like openings. To posi' tively carn or lock bobbin 6 on device, 5, bolt 29is turned outwardlyfrom counterbore 12 permitting spring 31'to bias'lock bracket 30 outwardly from plate 9 therebyjrnovplated for'use on driven spindle arrangements as in textile yarn twisterarrangements; In the latter applications bearings 13 can be removed and the chuck device 5 mounted directly on atdriven spindleand rotated therewithf 1' f is It will be understood that,. modifications and variations that no limitations are-contemplated except as defined :bythe-scope'of the following claims. r 3

-'-"W 1 m; f V V v 1. Filamentwinding apparatus comprising 'combina- 'tiont' t i e) a hollow filament holder for building filament packages thereon having a plurality of spaced-rib means extending inwardly from the wall defining the inner bore thereofi rnounted .coarri'allyabout -said-pair position reducing balance and vibration problems incidental to conventional pair of cam'mem-v of spaced cam members with said plurality of rib means positioned in contact with said camming surfaces of said pair of cam members for applying a vise grip thereto to lock said hollow filament holder to said pair of cam members,

(1) traverse means positioned near said hollow filament holder for traversingly delivering a filament thereto from a source thereof, and

(g) drive means positioned in surface contact with said hollow filament holder for surfacely driving the latter and said pair of cam members rotatably about shaft means.

2. Filament winding apparatus comprising in combination:

(a) shaft means,

(b) a pair of substantially circular plates coaxially and rotatably mounted in spaced relation on said shaft means, each of said pair of substantially circular plates having a plurality of spaced linear camming surfaces formed peripherally thereof,

(0) retainer means for retaining said pair of substantially circular plates on said shaft means,

(a') a plurality of bias means operatively connected to and adapted to counterrotate said pair of substantially circular plates relative to one another,

(e) a hollow filament holder for building filament packages thereon having a plurality of spaced longitudinal rib means extending radially inwardly from the wall defining the inner bore thereof mounted coaxially about said pair of substantially circular plates with each of said plurality of rib means positioned in contact with a respective linear camming surface of each of said pair of substantially circular plates for applying a vise grip thereto to lock said hollow filament holder thereon,

(f) traverse means positioned near said hollow filament holder for traversingly delivering a yarn thereto from a source thereof, and

(g) drive means positioned in surface contact with said hollow filament holder for driving the latter and said pair of substantially circular plates rotatably about said shaft means.

3. Filament winding apparatus as claimed in claim 2 wherein said plurality of bias means are springs.

4. Filament winding apparatus as claimed in claim 2 further comprising bracket means operatively associated with said shaft means for locking said pair of substantially circular plates against rotation relative to each other and braking means positioned adjacent one of said pair of substantially circular plates for braking said one circular plate against rotation.

5. Filament winding apparatus as claimed in claim 4 wherein the other of said pair of substantially circular plates is provided with openings for manually rotating said other circular plate.

6. Filament winding apparatus as claimed in claim 4 wherein said one circular plate is provided with flanges.

7. Filament yarn winding apparatus comprising in combination:

(a) a pivotal lever,

(b) a shaft fixedlys secured at one end thereof intermediate the ends of said pivotal lever,

(0) bearing means mounted on said shaft,

(d) a first cam member having an axial sleeve portion at one side thereof coaxially mounted on said hearing means and provided with spaced symmetrically arranged camming surfaces formed about the outer periphery thereof,

(e) retainer means for retaining said first cam member on said bearing means,

(f) journal means mounted adjacent the end of the sleeve portion of said first cam member,

(g) retainer means for retaining said journal means on said sleeve portion of said cam member,

(h) a second cam member coaxially mounted on said journal means and provided with spaced symmetrically arranged camming surfaces formed about the outer periphery thereof,

(i) recess means defined in said second cam member,

(j) an annular member coaxially mounted in fixed relation on said sleeve portion of said first cam member,

(k) a plurality of bias means interconnecting said second cam member and said annular member for biasing said first and second cam members counterrotatably relative to one another,

(I) brake means secured to said pivotal lever for braking said first cam member,

(m) bracket means swivelly secured to said shaft and adapted to cooperate with said recess in said second cam member for locking the latter against rotation relative to said first cam member,

(n) a hollow filament yarn holder for building filament yarn packages thereon having a plurality of spaced longitudinal ribs extending radially inwardly from the wall defining the inner bore thereof and mounted concentrically about said first and second cam members with each of said plurality of ribs positioned in contact with a respective camming surface -on said first and second cam members which camming surfaces apply a vise grip thereto to lock said hollow filament yarn holder to said first and second cam members,

(0) traverse means positioned near said hollow filament yarn holder for traversingly delivering a filament yarn thereto from a source thereof, and

(p) drive means normally positioned in surface contact with said hollow filament yarn holder for driving the latter rotatably about said shaft means.

8. Filament yarn winding apparatus as claimed in claim 7 wherein said first and second cam members are substantially circular plates and said camming surfaces are linear and symmetrically arranged at right angles to the face of said cam plates.

9. Filament yarn winding apparatus as claimed in claim 7 wherein said second substantially circular plate has a collar at one side thereof provided with a plurality of slots, and wherein stop members extend through said slots and are fixed to said sleeve portion of said first cam member for limiting the rotation of said second cam member.

10. A chuck device for mounting a hollow filament holder having rib means formed on the wall of the bore thereof, said device comprising:

(a) shaft means,

(b) bearing means mounted on said shaft means,

(0) a pair of spaced cam members mounted coaxially in spaced relation on said bearing means, each of said pair of cam members being provided with spaced symmetrically arranged camming surfaces formed about the outer periphery thereof and normally engaging the rib means of the hollow filament holder,

(d) retainer means for retaining said pair of cam members-on said bearing means,

(e) bias means operatively interconnecting said pair of cam members for biasing the same counterrotatably relative toone another,

( locking means on said shaft means and said pair of cam members for operatively locking the latter against rotation relative to each other,

(g) braking means positioned adjacent one of said pair of cam members for braking the same, and

(h) slot means provided in the other of said pair of cam members for manually rotating said other cam member against the force of said bias means.

11. A bobbin chuck device for mounting a bobbin having rib means formed on the wall of the bore thereof, said device comprising:

(a) shaft means,

(b) a pair of cam members mounted 'ifi spaced re 7 (c) retainer means for retainingvsaid pair of cam mem- 5 bers on said shaft means, and

(d) a plurality of bias means operatively connected v 'to and arranged'for counte'rrotating said pair of cam members 'relative to each other.

References Cited in the file ofth is' patent U- 1TED STATES PATENTS Great Britain Mar. 21, 1962 

1. FILAMENT WINDING APPARATUS COMPRISING IN COMBINATION: (A) SHAFT MEANS, (B) A PAIR OF CAM MEMBERS COAXIALLY AND ROTATABLY MOUNTED IN SPACED RELATION ON SAID SHAFT MEANS, EACH OF SAID PAIR OF CAM MEMBERS HAVING A PLURALITY OF SPACED CAMMING SURFACES FORMED PERIPHERALLY THEREOF, (C) RETAINER MEANS FOR RETAINING SAID PAIR OF CAM MEMERS ON SAID SHAFT MEANS, (D) A PLURALITY OF BIAS MEANS OPERATIVELY CONNECTED TO AND ARRANGED FOR COUNTERROTATING SAID PAIR OF CAM MEMBERS RELATIVE TO EACH OTHER, (E) A HOLLOW FILAMENT HOLDER FOR BUILDING FILAMENT PACKAGES THEREON HAVING A PLURALITY OF SPACED RIB MEANS EXTENDING INWARDLY FROM THE WALL DEFINING THE INNER BORE THEREOF MOUNTED COAXIALLY ABOUT SAID PAIR OF SPACED CAM MEMBERS WITH SAID PLURALITY OF RIB MEANS POSITIONED IN CONTACT WITH SAID CAMMING SURFACES OF SAID PAIR OF CAM MEMBERS FOR APPLYING A VISE GRIP THERETO TO LOCK SAID HOLLOW FILAMENT HOLDER TO SAID PAIR OF CAM MEMBERS, (F) TRAVERSE MEANS POSITIONED NEAR SAID HOLLOW FILAMENT HOLDER FOR TRAVERSINGLY DELIVERING A FILAMENT THERETO FROM A SOURCE THEREOF, AND (G) DRIVE MEANS POSITIONED IN SURFACE CONTACT WITH SAID HOLLOW FILAMENT HOLDER FOR SURFACELY DRIVING THE LATTER AND SAID PAIR OF CAM MEMBERS ROTATABLY ABOUT SHAFT MEANS. 